Voyager Mission Operations Status
Report # 2012-07-20, Week Ending July 20, 2012
Command Transmission &
Verification Operations
Voyager
1 command operations consisted of the uplink of a Command Loss Timer Reset on 07/18
[DOY 200/0345z]. The spacecraft received
the command.
Voyager
2 command operations consisted of the uplink of seven bracketed Command Loss
Timer Resets sent on five-minute centers using 0.5 Hz steps on 07/16 [DOY 198/1627z].
The spacecraft received two of the seven commands sent.
Sequence Generation Operations
Data Return Operations
Voyager
1 Data Processing and Operations:
There were 38.5
hours of DSN scheduled support for Voyager 1 of which 9.1 hours were large
aperture coverage. One schedule support change made on 07/20 [DOY 202] released
0.5 hours of Array DSS-25/26 support.
The total actual support for the period was 38.0 hours of which 9.1
hours were large aperture coverage.
There were no significant outages.
Science instrument
performance was nominal for all activities during this period. One frame of GS-4 data was recorded this
week. A second frame of GS-4 data was
recorded on July 20. The EDR backlog is 7
days.
Voyager
2 Data Processing and Operations:
There were 44.0 hours of DSN scheduled support for
Voyager 2 of which 10.3 hours were large aperture coverage. There were no real-time or schedule support
changes made during the period.
There was one significant outage of 1.5 hours on 07/14
[DOY 196] due to heavy rain at DSS-45 [DR C108893].
Science instrument performance was nominal for all activities during this period. The EDR backlog is 7 days.
Flight System Performance
Voyager
1 performance was nominal during this report period. Activities included turning on Gyros B &
C and a PMPCAL on 7/17 (DOY 20).
Voyager
2 performance was nominal during this report period.
PROPELLANT/POWER CONSUMABLES STATUS
AS OF THIS REPORT
|
Spacecraft |
Consumption One Week (Gm) |
Propellant Remaining (Kg) |
Output (Watts) |
Margin (Watts) |
|
1 |
4.80 |
22.85 |
264.7 |
13 |
|
2 |
4.83 |
26.73 |
265.9 |
33 |
RANGE, VELOCITY AND ROUND TRIP LIGHT
TIME AS OF THIS REPORT
|
|
Voyager 1 |
Voyager 2 |
|
Distance
from the Sun (Km) |
18,147,000,000 |
14,823,000,000 |
|
Distance
from the Sun (Mi) |
11,276,000,000 |
9,211,000,000 |
|
Distance
from the Earth (Km) |
18,055,000,000 |
14,699,000,000 |
|
Distance
from the Earth (Mi) |
11,219,000,000 |
9,133,000,000 |
|
Total
Distance Traveled Since Launch (Km) |
24,210,000,000 |
23,182,000,000 |
|
Total
Distance Traveled Since Launch (Mi) |
15,044,000,000 |
14,405,000,000 |
|
Velocity
Relative to Sun (Km/sec) |
17.045 |
15.440 |
|
Velocity
Relative to Sun (Mi/hr) |
38,128 |
34,538 |
|
Velocity
Relative to Earth (Km/sec) |
40,411 |
33.696 |
|
Velocity
Relative to Earth (Mi/hr) |
90,397 |
75,376 |
|
Round
Trip Light Time (hh:mm:ss) |
33:26:42 |
27:14:14 |